/* 公共的样式 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;

    background-image: linear-gradient(120deg, #84fab0 0%, #8fd3f4 100%);    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}

/* 上方导航栏 */
.nav {
    width: 100%;
    height: 50px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.15) 0%, rgba(0,0,0,0.15) 100%), radial-gradient(at top center, rgba(255,255,255,0.40) 0%, rgba(0,0,0,0.40) 120%) #989898; background-blend-mode: multiply,multiply;
    display: flex;
    justify-content: left;
    align-items: center;
    color: white;
}



/* 导航栏中的占位器 */
.nav .spacer {
    width: 90%;
}

/* 导航栏中的按钮 */
.nav a {
    color: #fff;
    text-decoration: none;
    padding: 0 10px;
}


.container {
    width: 100%;
    height: calc(100% - 50px);

    display: flex;
    align-items: center;
    justify-content: center;
}